Corkscrew



FIG. 1 is an upper perspective view of the corkscrew showing my new design.

FIG. 2 is a rear elevation view thereof;

FIG. 3 is front elevation view thereof;

FIG. 4 is a side view thereof, an opposite side view being identical;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken lines on the bottom in FIG. 6 are included for the purpose of showing portions that form no part of the claimed design. 

CLAIM The ornamental design for a corkscrew, as shown and described. 